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Best cas plugins for WordPress

The most popular cas plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Authorizer leads with 7K+ active installs, ahead of WP Cassify (900+) and wpCAS (100+). All 6 plugins tagged “cas” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 5 cas plugins

  1. 1.
    Authorizer

    The most installed cas plugin, with 7K+ active installs. Rated 5.0 from 20 reviews, updated 1 month ago.

  2. 2.
    WP Cassify

    900+ active installs. Rated 5.0 from 16 reviews, updated 4 months ago.

  3. 3.
    wpCAS

    100+ active installs. No reviews yet, last updated 16 years ago. Tested only up to WordPress 2.7.1.

  4. 4.
    Cassava CAS Server

    30+ active installs. Only 2 reviews so far, last updated 10 years ago. Tested only up to WordPress 4.4.34.

  5. 5.
    UTHSC WPCAS

    10+ active installs. No reviews yet, last updated 10 years ago. Tested only up to WordPress 4.3.34.

All 6 plugins tagged “cas”